Suppose you have 3.00 g of powdered zinc metal, 3.00g of powdered silver metal and 500.0 mL of a 0.2 M copper(II) nitrate solution. (b) What is the net ionic equation that describes this reaction?

검증된 단계별 안내

Identify the possible reactions: Zinc and silver metals can react with copper(II) nitrate solution. However, silver is less reactive than copper, so it will not displace copper from its compound. Zinc, being more reactive, can displace copper from copper(II) nitrate.

Write the balanced chemical equation for the reaction between zinc and copper(II) nitrate: \( \text{Zn(s)} + \text{Cu(NO}_3\text{)}_2\text{(aq)} \rightarrow \text{Cu(s)} + \text{Zn(NO}_3\text{)}_2\text{(aq)} \).

Identify the ions present in the solution: Copper(II) nitrate dissociates into \( \text{Cu}^{2+} \) and \( \text{NO}_3^- \) ions in solution.

Determine the net ionic equation: The net ionic equation includes only the species that undergo a change. Zinc metal reacts with copper ions, so the net ionic equation is \( \text{Zn(s)} + \text{Cu}^{2+}\text{(aq)} \rightarrow \text{Cu(s)} + \text{Zn}^{2+}\text{(aq)} \).

Verify the charge and mass balance: Ensure that the number of atoms and the total charge are balanced on both sides of the net ionic equation.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Net Ionic Equations

A net ionic equation represents the actual chemical species that participate in a reaction, omitting spectator ions that do not change during the reaction. It focuses on the ions and molecules that undergo a chemical change, providing a clearer picture of the reaction's essence. This is particularly useful in reactions involving soluble ionic compounds in aqueous solutions.

Oxidation-Reduction Reactions

Oxidation-reduction (redox) reactions involve the transfer of electrons between species, leading to changes in oxidation states. In this context, zinc is oxidized (loses electrons) while copper ions are reduced (gain electrons). Understanding the roles of oxidizing and reducing agents is crucial for writing the correct net ionic equation for the reaction.

Solubility Rules

Solubility rules help predict whether a compound will dissolve in water, which is essential for determining the reactants and products in aqueous reactions. For instance, copper(II) nitrate is soluble, while silver may form an insoluble compound with certain anions. Knowing these rules aids in identifying which ions remain in solution and which precipitate out during the reaction.